Got a very clean burn free G07, but had a blown HOT, replaced the fly and the hot , tested the regulator and small fuse and replaced. I then noticed this diode soldered in at S1 to S3 on the wires going to the hot. Never seen this, now the previous HOT had NO markings on it, just a bottlecap tested bad, why would they put this diode here? Is it because the transitor they used was not spec? wtf?